Home / 12,243.28-18,366.06-3,478.36

Finding the Fourth Proportional to 12,243.28, 18,366.06 and 3,478.36

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Solution

The fourth proportional to 12,243.28, 18,366.06 and 3,478.36 is: 5,217.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,243.28 : 18,366.06 = 3,478.36 : x
  2. Step 2: Convert to fraction form
    12,243.28/18,366.06 = 3,478.36/x
  3. Step 3: Cross multiply
    12,243.28x = 18,366.06 × 3,478.36
  4. Step 4: Simplify right side
    12,243.28x = 63,883,768.46
  5. Step 5: Solve for x
    x = 63,883,768.46/12,243.28
  6. Step 6: Final answer
    x = 5,217.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.